Malicious PDF — malware analysis report

Heuristics 5

• Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
  Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
• Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
  PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
• External URI info PDF_URI
  PDF contains an external URL action
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• Embedded URL info EMBEDDED_URL
  One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
  URL https://traffset.ru/aws?keyword=pitbull+puppies+for+sale+in+california PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4388819/normal_5f90bc15bdd5d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4391319/normal_5f9c700be8196.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366028/normal_5f90ee6d7779a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365627/normal_5f9fd649c93e2.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4371783/normal_5f9922a4aa2b7.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376358/normal_5f8c81820b476.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366384/normal_5f8ecce4e52a3.pdfIn PDF document text
  • https://letolonenuxe.weebly.com/uploads/1/3/4/0/134095956/linokejazeneretovol.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4448126/normal_5fa2d0764328d.pdfIn PDF document text
  • https://pojosividadom.weebly.com/uploads/1/3/4/5/134524524/dobejeraxaxak.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4374371/normal_5f96de003344f.pdfIn PDF document text
  • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/5877267.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/329405de-e0f9-495f-bf96-8a0a6827e5c2/vulupu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9e93d3ed-a815-49fa-9296-dfa4e4cb6d07/91715693880.pdfIn PDF document text
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
  • http://purl.org/dc/elements/1.1/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • http://scripts.sil.org/OFLIn PDF document text

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